The best and clearest lecture series I have seen on youtube.
@davidvalle3068 Жыл бұрын
Im a EE studying for the MCAT, cant believe he started this video with current trhough a wire. The more I study the life sceinces, the more I'm certain that our bodies are an engineering masterpiece
@smeetdesai15906 жыл бұрын
i was looking for a good explanation regarding saltatory conduction, absolutely loved your brief and crisp revision. keep up the good work maestro!
@willy41293 жыл бұрын
Outstanding lectures, sir. Thank you so much.
@nkanyisomchunu50679 жыл бұрын
WOW!!! Amazing explanation. Thank you
@rawanmhawe41453 жыл бұрын
I cannot thank you enough! Bless you!
@purpleriver70975 жыл бұрын
super explaination. Very well organized that make it easy to remember. Thank you!
@hajar52634 жыл бұрын
Thanks a million for this great explanation!
@sam43303 жыл бұрын
Could someone help me understand why the axon has to be "insulated", rather than just having nodes that are the same distance apart but without any myelin? I mean, why is myelin essential to this particular process? What would happen if there was no myelin between two nodes of Ranvier? And I'm having a hard time understanding how the part about larger diameter --> less resistance is relevant. If the signal doesn't actually travel through the myelin, the myelin doesn't seem to do anything in this regard?
@drxersiosman63067 жыл бұрын
Iam very glad to have such clear that make classified. which I understand alot of thing that I was ignorance person before it.THANK YOU VERY MUCH
@حسنناصرحمزةالعباسي4 жыл бұрын
Great explanation.Thanks very much.
@ragulmrnr10 жыл бұрын
Thanks a lot! Very lucid explanation
@junczhang8 жыл бұрын
love every one of your videos!
@DapaChrons4 жыл бұрын
fantastic video
@cstrikehamza52186 жыл бұрын
amazing method to teach
@carlos1988f8 жыл бұрын
Amazing dude!
@bintemuhammad86496 жыл бұрын
Amazing Teacher
@lostinthoughts136 жыл бұрын
Great stuff, just great. So in myelinated areas there are no action potentials but simply positive ions moving towards a node of ranvier, right ?
@anvayaiyer56144 жыл бұрын
Thank you
@Lakshmi235Lakshmi2 жыл бұрын
Thank you so much 🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏
@thetrdoctors33278 жыл бұрын
Thank u...awesome explanation But I have a simple question... Does the nodes of ranveir contain potassium channels for repolirization that occurs after the action potential is moving away from this node to the next node??
@reham94127 жыл бұрын
Rusul Salah x yes,according to My A&P book more K+ and Na+ voltage-gated channels are present at the nodes of Ranvier than at the regions covered by Myelin Sheath
@leahevelee Жыл бұрын
thank you❤
@rahafaman23357 жыл бұрын
this is awesome! thank you
@AmiraAshraf-i1uАй бұрын
First, I would like to thank you at all. But I have a question by using myelin sheath the speed nerve impulse transmission increases at the same time I think it makes the distance of transmission increases that means increasing of axolemma length but when length increases the speed should decrease so how these two points happened in addition they are antagonist to each other.
@BC2112home3 жыл бұрын
Thank you so much sir
@christytembo40625 жыл бұрын
thanks
@khushiverma4692 жыл бұрын
Best sir
@dyoomah1710 жыл бұрын
Thanks very much ☺ .. I have question does all the neurons in our body have a myelinated axons !! And all of them propagate by saltatory conduction ? OR there's neurons propagate by contiguous conduction ???
@AKLECTURES10 жыл бұрын
You're welcome! :) No, not all neurons in our body are myelinated. In fact, grey matter contains very few myelinated axons.
@brika71507 жыл бұрын
Thank you!
@oldhounddog014 жыл бұрын
I usually love your lectures but I think the analogy from electric current flow to the biological process of the saltatory conduction (SC) incomplete. My biochemistry book (among other sources) explains the SC action as the opening & closing of voltage-sensitive gated channels opening & closing allowing first the sodium ions to rush in forcing the potential to change to a more positive voltage which is shut off when positive enough triggering the potassium ions to move back into the cytosol causing the electronegativity to become very negative. The result is two-fold. Na ions diffuse toward the next node of Ranvier and a refractory effect prevents a backward stimulation along the axon. I strongly suspect from what i have studied while the analogy seems fundamentally to explain the process that upon deeper examination the biological process just does not follow the physics of current flow in a wire. When comparing the large diameter axon of a squid to that of a typical human nerve cell does the analogy hold up? The speed of propagation is relatively the same but is the process the same? If I am sick the cause of the symptom may not be the same as the symptom in someone else. I still need to find the chemical structure of myelin!
@muhammadbasim49779 жыл бұрын
Great!
@annamarialehocki9998 жыл бұрын
Thank You! :)
@zainal-abediensajad54575 жыл бұрын
i love you man
@dr-wesamalattar54975 жыл бұрын
Great ! ! Thank u dr😊
@barneystinson70088 жыл бұрын
Hi MateI am struggling to find some information about physics perspectives of demyelination, could you please help out.
@CannabinatedFantasy4 жыл бұрын
u speak so nice at 2x
@mohamadekrama6 жыл бұрын
I have been struggeling to distinguish btwn abs and rel refractory never again
@wenxilau77456 жыл бұрын
May i know what is local circuit neurone ??
@xtrem6413 жыл бұрын
I like my women like I like my axons Short and thick